Improvement in mole-plows



I. HOBSON.

Mole-Plow.

No. 25,334. Patented Sept. 6, 1859.

filifnesses: inventor,

AM PHOTO-LITHO. .CO. N.Y. (OSBORNE'S PR CESSJ UNITED STATES PATENTOFFICE.

IMPROVEMENT IN MOLE-FLOWS.

Specification forming part of Letters Patent No. 25,334, dated September6, 1859.

To all whom it may concern:

Be it known that I, IRIS Henson, of Stouts Grove, in the county ofMcLean and State ot Illinois, have invented a new and useful Improvementin Ditching-Flows; and I do hereby declare that the following is a full,clear,

and exact description of the same, reference. being had to theaccompanying drawings,

forming a part of this specification, in which Figure 1 is a perspectiveview of my improvement in ditching-machines. Fig. 2 is a plan or topview of the same. 'Fig. 3 is an under view of the mole.

Similar letters of reference in each of the several figures indicatecorresponding parts.

The nature of my invention consists in the combination of a beam whichhas a horizontal joint forward of the colter, with a rod arranged overthe top of said joint, and with a horizontal adjusting and stop plate,whereby that port-ion of the beam of the plow forward of the colter canbe adjusted so as to overhang dry land without changing the position ofthe latter, while the portion which carries the cutter lies in line withthe middle of the slough or ditch. Thus having the beam adjustableadmits of the capstan or power employed to operate the machine beingarranged on dry land instead of in the slough or ditch. This is veryimportant, as must be evident.

To enable others skilled in the art to make and use my invention, I willproceed to describe its construction and operation.

A represents the beam, made in two parts, a b, which are united by ahorizontaljoint, B, at a point slightly forward of the colter O.

D is the mole attached to the bottom of the colter. This is made in twoparts, 0 d, and united by horizontal V-shaped joint 0, andloosely-fitted connections f g, as shown, so that the rearportion mayturn independently of the front portion in making short turns, and thusavoid breaking or bending the colter.

E is the roller which gages the depth at which the mole is to cut.

F G are the horizontally and vertically arranged bow-shaped bracketswhich suspend the roller.

H is the set-screw by which the beam and roller are brought nearertogether or moved farther apart vertically, so as to gage the depth ofout. The set-screw screws into a female socket formed in the rear of thebeam, and therefore, as the bracket G is capable of turning at h, whilethe bracket F cannot change its location on the screw, the beam iscaused to descend or rise, and thus lower or elevate the mole when thescrew is turned in the proper directions.

I is the rod, which is arranged on top of the beam so as to cross thehorizontal joint B. The rear end of this rod is fastened permanently tothe rear portion of the beam. The iront end is left loose.

J is a plate arranged transversely on the front part of the beam,fitting in a dovetail or slot, so as to be tlnsh with the top of thebeam. This'plate is furnished with a seriesof adjusting pin-holes,i i,on each side of the beam, and with two removable stop-pins,j 9','(m itsupper side. With this plate and the rod I the two parts of the beam canbe kept in a straight line, as shown in black in Fig. I.

To adjust the front portion of the beam, as shown in red, the stop-pinsare withdrawn and the beam moved laterally on its joint. The stop-pinsare now inserted in holes on either side of the rod I, they being turnedso as to suit the relative position or the rod, plate, and beam. \Vhenthe beam is thus adjusted the colter and mole will run in the center ofthe slough or ditch, while the nindlass or power by which the plow ismoved will be on dry land.

What I claim as my invention, and desire to secure by Letters Patent,is-- The combination of a ditching-plow l)! am having a horizontal jointforward of the more and colter, with a. rod arranged over the top ofsaid joint, and with a horizontal adjusting and stop plate,substantially as set forth.

IRIS HOBSON.

